Oil well valve



June 27, 1950 B. F. HILL 2,512,744

OIL WELL VALVE Filed June 13, 1947 2 Sheets-Sheet 1 B. F. HILL OIL WELL VALVE June 27, 1950 2 Sheets-sheaf. 2

Filed June 13, 1947 Fig. 4.

m m n y m H v m B I. M -mqs Patented June 27, 1950 UNITED STATES PATENT OFFICE OIL WELL VALVE Benjamin F. Hill, Tulsa, Okla.

Application June 13, 1947, Serial No. 754,454

1 Claim. 1

The present invention relates to new and useful improvements in valves for oil wells and embodying a valve housing connected to th tubing and casing of a well and embodying valve means for cutting off the flow from the well and while the cable remains in the hole.

An important object of the present invention is to provide a pair of overlapping sliding valve plates mounted in the valve housing and which may be operated from any desired distance from the well to effectively cut off the flow therefrom in case of fire, or for other purposes, and while the operator remains at a safe distance from the well.

A further object is to provide a device of this kind which is simple and practical in construction, which is efficient and reliable in operation, relatively inexpensive to manufacture and install in operative position and which otherwise is well adapted for the purposes for which the same is intended.

Other objects, and advantages reside in the details of construction and operation as more fully hereinafter described and claimed, reference being had to the accompanying drawings forming part hereof, wherein like numerals refer to like parts throughout, and in which:

Figure l is a side elevational view.

Figure 2 is a top plan view.

Figure 3 is a perspective view showing the rectangular frame for the sliding valves.

Figure 4 is a vertical sectional view.

Figure 5 is a plan view with the upper valve plate removed and taken substantially on a line 5-5 of Figure 4, and

Figure 6 is a transverse sectional view taken on a line 6-6 of Figure 4.

Referring now to the drawings in detail, wherein for the purpose of illustration I have disclosed a preferred embodiment of the invention the numeral 5 designates a valve body or housing generally and which comprises an upper valve plate 6 and a lower valve plate I of substantially rectangular shape and having an open frame 8 secured between the plates by bolts 9.

A pyramidal boss I0 extends upwardly from the upper plate 6 and is formed with a vertical passage II for threaded connection with a well tubing (not shown). A similar boss l2 extends downwardly from the lower plate I and is likewise formed with a vertical passage l3 for threaded connection with the well casing. Lateral passages M are also formed in the boss l2 for connecting the passage 13 with a plurality of tanks, the connections for the tank havin the usual cut-off valve (not shown) therein.

Th frame 8 forms a guide for an upper sliding valve l5 and a lower sliding valve l6 having their side edges closely fitting with the side edges of the frame and having their inner ends positioned in an overlapping relation with respect to each other. The opposed faces of the valves l5 and I6 are machined to provide a seal therebetween without requiring the use of gaskets or packing.

The inner ends of the valves l5 and I6 are formed with V-shaped notches l1 and [8 respectively to provide an opening I!) between the valves, the size of which is regulated by the horizontal sliding movement of the valves toward and away from each other.

The underside of the valve I5 is formed with a V-shaped head 20 and the upper surface of the valve i6 is formed with a similar head 2|, the head 20 being adapted to seat in the notch l8 while the head 2| is adapted to seat in the notch ll when the valves are moved inwardly into closed position to thus provide a liquid tight seal for the opening IS.

The side edges of each of the valves at the inner ends thereof are formed with tongues 22 which project inwardly beyond their respective notches to enter recesses 23 at th side edges of their coacting heads to provide a seal for the side edges of the valve.

The outer end of each of the valves is formed with a T-shaped notch 24 in which the annular head 25 of a feed screw 26 freely works to provide an operative connection between the valves and the screws. The screws 26 for the respective valves are threaded through the ends of the frame 8 and are provided at their outer ends with crank handles 21.

In the operation of the device, with the boss l0 connected to the well tubing and the boss l2 connected to the well casing oil rising in the casing may flow to the tubing through the opening l9.

When it is desired to cut off the flow of oil from the well, the screws 26 are turned to slide the valves l5 and I6 inwardly in the frame 8 to close the opening [9, the interfitting engagement of the heads 20 and 2| in the notches l8 and ll of the respective valves tightly sealing the opening.

Having described the invention what is claimed as new is:

A valve of the class described comprising .a housing including upper and lower rectangular plates, each having a hollow boss projecting outwardly therefrom for attaching respectively to a well tubing and easing, a rectangular frame coextensive with the plates and secured at its marginal edges between said plates and separating the plates from each other to form a rectangular valve chamber therein, a pair of flat sliding valves mounted in the frame and having one end disposed in coacting opening and closing movement with respect to each other to control passage of fluid through the housing, said frame and valves being removably mounted as a unit in the housing, and operating means for the valves, said operating means comprising a pair of feed screws Working in opposite ends of the frame and operable outwardly thereof, and a diskshaped head at the inner end of each screw and engaged in a T-groove in the upper surface of each valve.

BENJAMIN F. HILL.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 992,027 Morlock May 9, 1911 998,400 Buth July 18, 1911 1,641,921 Crowell July 13, 1926 1,692,302 Hessemer Nov. 20, 1928 1,788,763 Gant Jan. 13, 1931 1,802,732 Muller Apr. 28, 1931 1,963,683 Shaffer June 19, 1934 2,052,939 Otis Sept. 1, 1936 

